Immanuel-Kirche, Lutheran Protestant church in Marten, Dortmund, Germany.

Immanuel-Kirche is a cruciform central-plan church of rough Westerwald granite, built 1906–1908 to plans by Arno Eugen Fritsche. Because of the plot it is not oriented east: the entrance faces south, the altar north, and the whole building is turned about 30° clockwise from the north-south axis. A tall tower with a slightly curved pointed spire stands in the angle between facade and transept; the east and west sides hold two large Art Nouveau windows.

Built from 1906 to 1908 to plans by Arno Eugen Fritsche, the church was consecrated on 18 March 1908. Its cross-shaped central plan follows the 1891 Wiesbaden Programme for Protestant church building. It was named Immanuel-Kirche only in the 1980s, taking the name from its partner church in East Berlin; in 1983 it was listed as a monument, and in 2015 it joined the Route der Industriekultur, Sakralbauten.

The name Immanuel-Kirche dates only from the 1980s, when the congregation took it over from its partner church in East Berlin. Inside, a gold-lettered band above the arches carries the Beatitudes; the legible right side reads "Selig die rein im Herzen sind, denn sie werden Gott" (Blessed are the pure in heart, for they shall see God). The pale blue-green vault with cream ribs and two oval medallions holding animal figures belongs to the Art Nouveau fittings restored between 1982 and 1989.

The church is not oriented east; the entrance is on the south side and the altar on the north, with the whole building turned about 30° clockwise from the north-south axis because of the shape of the plot. The two large Art Nouveau windows are on the east and west sides, and the tall tower stands in the angle between the facade and the transept arm.

The organ visible behind the historic facade is a digital instrument built by Benedikt in 1997 with 103 stops on 8 independent divisions; only the three-manual console shows. Its 20 new loudspeakers and six units from the earlier Ahlborn organ stand behind the Jugendstil prospect. Since 2009 a computer running Hauptwerk software has supplemented it.